[BC],[" are common tangents to two circles of unequal "r" "],[" A "],[qquad [0],[0]]

Common tangent to two circles

Common Tangents of Circles

In figure, AB and CD are common tangents to two circles of unequal radii. Prove that AB=CD

In figure, AB and CD are common tangents to two circles of unequal radii. Prove that AB=CD

Number of common tangents of two concentric circle are

Family Of Circles|Common Tangents to Two Circles|OMR

Two circles touch externally at P. A direct common tangent AB to two circles touch the circles at A and B. Then the measure of angleAPB is

The angle between two tangents to a circle may be 0^(@) .

How many common tangents can be drawn to two concentric circles ?